Vulnerability-Lookup

OESA-2023-1854 (CVE-2023-47641)

Vulnerability from osv_openeuler – Published: 2023-11-24 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

python-aiohttp security update

Details

Async http client/server framework (asyncio).

Security Fix(es):

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Affected versions of aiohttp have a security vulnerability regarding the inconsistent interpretation of the http protocol. HTTP/1.1 is a persistent protocol, if both Content-Length(CL) and Transfer-Encoding(TE) header values are present it can lead to incorrect interpretation of two entities that parse the HTTP and we can poison other sockets with this incorrect interpretation. A possible Proof-of-Concept (POC) would be a configuration with a reverse proxy(frontend) that accepts both CL and TE headers and aiohttp as backend. As aiohttp parses anything with chunked, we can pass a chunked123 as TE, the frontend entity will ignore this header and will parse Content-Length. The impact of this vulnerability is that it is possible to bypass any proxy rule, poisoning sockets to other users like passing Authentication Headers, also if it is present an Open Redirect an attacker could combine it to redirect random users to another website and log the request. This vulnerability has been addressed in release 3.8.0 of aiohttp. Users are advised to upgrade. There are no known workarounds for this vulnerability.(CVE-2023-47641)

Severity

3.4 (Low)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-47641	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-aiohttp-debuginfo-3.7.4-2.oe1.aarch64.rpm",
          "python3-aiohttp-3.7.4-2.oe1.aarch64.rpm",
          "python-aiohttp-help-3.7.4-2.oe1.aarch64.rpm",
          "python-aiohttp-debugsource-3.7.4-2.oe1.aarch64.rpm"
        ],
        "src": [
          "python-aiohttp-3.7.4-2.oe1.src.rpm"
        ],
        "x86_64": [
          "python-aiohttp-help-3.7.4-2.oe1.x86_64.rpm",
          "python-aiohttp-debugsource-3.7.4-2.oe1.x86_64.rpm",
          "python-aiohttp-debuginfo-3.7.4-2.oe1.x86_64.rpm",
          "python3-aiohttp-3.7.4-2.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "python-aiohttp",
        "purl": "pkg:rpm/openEuler/python-aiohttp\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.4-2.oe1"
            }
          ],
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        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-aiohttp-debugsource-3.7.4-2.oe1.aarch64.rpm",
          "python-aiohttp-help-3.7.4-2.oe1.aarch64.rpm",
          "python-aiohttp-debuginfo-3.7.4-2.oe1.aarch64.rpm",
          "python3-aiohttp-3.7.4-2.oe1.aarch64.rpm"
        ],
        "src": [
          "python-aiohttp-3.7.4-2.oe1.src.rpm"
        ],
        "x86_64": [
          "python-aiohttp-help-3.7.4-2.oe1.x86_64.rpm",
          "python-aiohttp-debuginfo-3.7.4-2.oe1.x86_64.rpm",
          "python3-aiohttp-3.7.4-2.oe1.x86_64.rpm",
          "python-aiohttp-debugsource-3.7.4-2.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "python-aiohttp",
        "purl": "pkg:rpm/openEuler/python-aiohttp\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.4-2.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-aiohttp-debuginfo-3.7.4-3.oe2203.aarch64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203.aarch64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203.aarch64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203.aarch64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203sp2.aarch64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp2.aarch64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp2.aarch64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp2.aarch64.rpm"
        ],
        "src": [
          "python-aiohttp-3.7.4-3.oe2203.src.rpm",
          "python-aiohttp-3.7.4-3.oe2203sp1.src.rpm",
          "python-aiohttp-3.7.4-3.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "python-aiohttp-debugsource-3.7.4-3.oe2203.x86_64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203.x86_64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203.x86_64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203.x86_64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp2.x86_64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp2.x86_64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp2.x86_64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "python-aiohttp",
        "purl": "pkg:rpm/openEuler/python-aiohttp\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.4-3.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-aiohttp-help-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp1.aarch64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp1.aarch64.rpm"
        ],
        "src": [
          "python-aiohttp-3.7.4-3.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203sp1.x86_64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "python-aiohttp",
        "purl": "pkg:rpm/openEuler/python-aiohttp\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.4-3.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python-aiohttp-help-3.7.4-3.oe2203sp2.aarch64.rpm",
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp2.aarch64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp2.aarch64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp2.aarch64.rpm"
        ],
        "src": [
          "python-aiohttp-3.7.4-3.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "python-aiohttp-debuginfo-3.7.4-3.oe2203sp2.x86_64.rpm",
          "python-aiohttp-debugsource-3.7.4-3.oe2203sp2.x86_64.rpm",
          "python3-aiohttp-3.7.4-3.oe2203sp2.x86_64.rpm",
          "python-aiohttp-help-3.7.4-3.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "python-aiohttp",
        "purl": "pkg:rpm/openEuler/python-aiohttp\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.4-3.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Low"
  },
  "details": "Async http client/server framework (asyncio).\r\n\r\nSecurity Fix(es):\r\n\r\naiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Affected versions of aiohttp have a security vulnerability regarding the inconsistent interpretation of the http protocol. HTTP/1.1 is a persistent protocol, if both Content-Length(CL) and Transfer-Encoding(TE) header values are present it can lead to incorrect interpretation of two entities that parse the HTTP and we can poison other sockets with this incorrect interpretation. A possible Proof-of-Concept (POC) would be a configuration with a reverse proxy(frontend) that accepts both CL and TE headers and aiohttp as backend. As aiohttp parses anything with chunked, we can pass a chunked123 as TE, the frontend entity will ignore this header and will parse Content-Length. The impact of this vulnerability is that it is possible to bypass any proxy rule, poisoning sockets to other users like passing Authentication Headers, also if it is present an Open Redirect an attacker could combine it to redirect random users to another website and log the request. This vulnerability has been addressed in release 3.8.0 of aiohttp. Users are advised to upgrade. There are no known workarounds for this vulnerability.(CVE-2023-47641)",
  "id": "OESA-2023-1854",
  "modified": "2026-08-06T11:06:18Z",
  "published": "2023-11-24T11:06:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1854"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-47641"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "python-aiohttp security update",
  "upstream": [
    "CVE-2023-47641"
  ]
}

CVE-2023-47641 (GCVE-0-2023-47641)

Vulnerability from cvelistv5 – Published: 2023-11-14 20:44 – Updated: 2025-11-03 20:36

Title

Inconsistent interpretation of `Content-Length` vs. `Transfer-Encoding` in aiohttp

Summary

Severity

3.4 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-29 20:18 UTC

CWE

CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/aio-libs/aiohttp/security/advi…	x_refsource_CONFIRM
https://github.com/aio-libs/aiohttp/commit/f016f0…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
aio-libs	aiohttp	Affected: < 3.8.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:36:08.200Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j"
          },
          {
            "name": "https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-47641",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-29T20:18:44.628858Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-29T20:18:58.589Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "aiohttp",
          "vendor": "aio-libs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.8.0"
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          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Affected versions of aiohttp have a security vulnerability regarding the inconsistent interpretation of the http protocol. HTTP/1.1 is a persistent protocol, if both Content-Length(CL) and Transfer-Encoding(TE) header values are present it can lead to incorrect interpretation of two entities that parse the HTTP and we can poison other sockets with this incorrect interpretation. A possible Proof-of-Concept (POC) would be a configuration with a reverse proxy(frontend) that accepts both CL and TE headers and aiohttp as backend. As aiohttp parses anything with chunked, we can pass a chunked123 as TE, the frontend entity will ignore this header and will parse Content-Length. The impact of this vulnerability is that it is possible to bypass any proxy rule, poisoning sockets to other users like passing Authentication Headers, also if it is present an Open Redirect an attacker could combine it to redirect random users to another website and log the request. This vulnerability has been addressed in release 3.8.0 of aiohttp. Users are advised to upgrade. There are no known workarounds for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.4,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
            "version": "3.1"
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          "descriptions": [
            {
              "cweId": "CWE-444",
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              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
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        },
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          "tags": [
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        "discovery": "UNKNOWN"
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      "title": "Inconsistent interpretation of `Content-Length` vs. `Transfer-Encoding` in aiohttp"
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    "dateReserved": "2023-11-07T16:57:49.245Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2023-1854 (CVE-2023-47641)

CVE-2023-47641 (GCVE-0-2023-47641)

Tags

Sightings

Nomenclature

Related by attack behaviour